那么怎样才能提高燃气轮机的效率，使其能够在3.4秒内将汽车启动并加速到62英里每时？
So how did they create a gas turbine engine that is fuel efficient yet can go from zero to 62 mph in 3.4 seconds?
汽车由2个微型燃气轮机提供动力，其尺寸比人的前臂稍长稍大一点。
The car gets its power from two new micro-sized gas turbine engines that are slightly larger and longer than a human forearm.
相比之下，内燃机比外燃机的效率高，比燃气轮机的价格便宜，比电动汽车容易添加燃料。
By contrast, the internal combustion engine is higher than the outboard engines in efficiency, cheaper than the price of gas turbines, easier than electric vehicles to add fuel.
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